[FFmpeg-devel] [PATCH V3] Add a filter implementing HDR image reconstruction from a single exposure using deep CNNs

[Guo, Yejun]

From: Vittorio Giovara [mailto:vittorio.giovara at gmail.com]
Sent: Monday, October 22, 2018 12:30 PM
To: Guo, Yejun <yejun.guo at intel.com>
Cc: FFmpeg development discussions and patches <ffmpeg-devel at ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH V3] Add a filter implementing HDR image reconstruction from a single exposure using deep CNNs


On Mon, Oct 22, 2018 at 4:19 AM Guo, Yejun <yejun.guo at intel.com<mailto:yejun.guo at intel.com>> wrote:
+    .description   = NULL_IF_CONFIG_SMALL("HDR image reconstruction from a single exposure using deep CNNs."),

> why "reconstruction"? there is nothing to construct back if the source wasn't hdr to begin with
> "tonemap" is probably a better term here, in my opinion
> same for previous uses

there is more detail data generated with the dnn model, the model accepts sdr frame and generates hdr data.
see more detail in paper @https://arxiv.org/pdf/1710.07480.pdf, and the description comes from the title of this paper.

> Thanks for the link, however i'm still not sold on the term. You "generate" hdr data, not "reconstruct": it's generated/estimated/made up data, not data that is lost and needs to be reconstrcuted. I suggested "tonemap" because you're mapping SDR tones (aka colors) to HDR ones, and that seems the right term to use. If you really dislike it, at least consider "HDR image generation from a single exposure using deep CNNs" which would work much better.

got your point, it’s nice, thanks, will choose ‘generation’

--
Vittorio